Massac County RainfallUnited StatesILMassac County70%Metropolis 70% Chance 70%Brookport 70% Chance 65%Mermet Lake 65% Chance Big BayBoazBrookportCretaceous Hills Nature PreserveFort Massac State ParkHillermanJoppaMassac Forest Nature PreserveMermetMermet LakeMetropolisMetropolis Municipal AirportNew ColumbiaRound KnobSamothShady GroveUnionville